As a result of plate tectonics, new crust is added to the Earth at ____, and old crust is recycled into the mantle at ____.
A) oceanic ridges; oceanic trenches
B) oceanic ridges; continental crusts
C) oceanic trenches; oceanic ridges
D) continental crusts; oceanic trenches
E) oceanic trenches; continental crusts

Question

Quizplus · Accepted Answer

New crust is formed at oceanic ridges through seafloor spreading, while old crust is subducted back into the mantle at oceanic trenches.

As a Result of Plate Tectonics, New Crust Is Added